[coreboot-gerrit] Patch merged into coreboot/master: e47477e build: re-enable ccache support

the following patch was just integrated into master:
commit e47477e52ced46986c352a0ae6cf798c9a7aa560
Author: Patrick Georgi 
Date:   Sat May 17 18:38:10 2014 +0200

build: re-enable ccache support

The ccache support was mostly disabled because it
    didn't hook onto most compilers anymore.

Caveat: ccache and scan-build don't work together since
    scan-build doesn't like arguments in its compiler command
    line (eg. "ccache gcc").

Change-Id: I7c1c6e22cb662f2b08e774ea484ac1c412fdd2db
    Signed-off-by: Patrick Georgi 
    Reviewed-on: http://review.coreboot.org/5775
    Tested-by: build bot (Jenkins)
    Reviewed-by: Kyösti Mälkki

See http://review.coreboot.org/5775 for details.

-gerrit